Geogas Prospecting Model Of Concealed Polymetallic Ore Prospecting

This paper bases on the item of NSFC(Natural Science Foundation ofChina)“Study of Concealed Geological Body and Cracked Gas Field(project number:41074094)”,National Land Transfer Project“Study of the Geogas exploration method in t he uranium polymetallic ore which in the exploration area in South of ZHUGUANGmountain in Guangdong province”(project number:12120113090500)and the ke-y project “The Technology and Research Of Radioactive Ores in Nanling(proj-ect number: SinoProbe-03-01-4C)” of “The Detecting Technology and Research Of the Deep Ground”,and researches concealed uranium ores and copper-zinc ores in GuangDong and GuangXi provinces where are the main experimental a-reas,with the objectives of establish the geogas prospecting model in the conce-aled polymetallic ore,and we mainly conducted the following study:1)Through research the best concentration of liquid collecting media,a couple of capturing agents were serially connected and all geogas samples were concentrated from 40 mL to 5 mL.Then combining with the geogas measure operation specification in the wild,establish the best working methods of geogas measure in the wild;2)The basic properties of ground gas field affected by different concealed metal ores :(elements association,REE characteristics,statistical, abnormal distribution and so on).3)Research the Soil X fluorescence and radioactive measurement methods to delineate abnormal prospecting target area,and rapid identification of the target site in the prospecting target area by geogas method.In order to accomplish the above research work,we has laid four survey lines in Dachang copper zinc deposit experimental area.The four lines named 226,228,230 and 232,completed a total of 202 points with the soil X-ray fluorescence measurement and geogas measure.In the uranium prospecting area,we has laid seven lines.The seven lines named 4,19,27,33,N,S and AB.On the 4,19 and AB lines,we completed a total of 218 points with soil X-ray fluorescence measurement.Completed a total of 417 points with gamma energy spectrum survey covering all seven survey lines.On the 4,19,33,N,S and AB lines,completed a total of 315 points with geogas measure.Based on the real data from the two areas we researched,combine the geological conditions of the working area,we study the characteristics of geochemical anomalies in two kinds of concealed metal deposits.Considering the relationship of different elements,relativity of elements,abnormal multivariate statistical character and the property of rare earth element, we researched the characters of abnormal situation affected by ores.Accroding to the characteristics we can extract the basic signs from the anomaly of the ore.On this basis,initially established a prospecting model of geogas measurement combined with soil X fluorescence and radioactive method in the polymetallic ore.